I have the Tokina 300mm f6.3 mirror lens made specifically for Micro Four Thirds sersored cameras. As such, it is remarkably small and lightweight for its super telephoto capabilities.
I already tried it on an APSC size sensor (Sony mirrorless). Although still quite usable, I do see just a little darkening of the very corners that corroborated this thing is optimally designed for the smaller MFT sensor size.
Wanting to try it on the even smaller than MFT sensored Pentax Q, just for fun. To accomplish that, I needed an MFT to PQ mount adaptor. Typical of mirror lenses, this Tokina is entirely manual focus and aperture is fixed, so there was no need for an adaptor with electrical contact pass through. There are contacts on this lens that feed focal length and aperture value to MFT cameras. A nice to have feature for embedding meta data to photos and also automatically setting in body image stabilization to 300mm, but I will surrender that convenience for my Q usage.
At the time of this post, there are no commercially available MFT to PQ adaptors outside of unrevised 3D printed models. TBH, I don’t want to risk having one printed for me without first reading a review of the model. So I decided instead to go ahead and fashion my own adaptor out of what bits and bobs I had at my disposal.
How I cobbled together an MFT to PQ adaptor for myself:
1) Cut a suitably sized hole into the bidder of an Olympus MFT rear lens cap
2) screwed in a metal Q lens mount donated from a Kookai Macro ring.
V
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